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#import "MBXBenchViewController.h"
#import <mbgl/ios/MGLMapView.h>
#import <mbgl/ios/MGLMapView_private.h>
#include "locations.hpp"
#include <chrono>
@interface MBXBenchViewController () <MGLMapViewDelegate>
@property (nonatomic) MGLMapView *mapView;
@end
@implementation MBXBenchViewController
#pragma mark - Setup
- (void)viewDidLoad
{
[super viewDidLoad];
NSURL* url = [[NSURL alloc] initWithString:@"asset://styles/streets-v8.json"];
self.mapView = [[MGLMapView alloc] initWithFrame:self.view.bounds accessToken:nil styleURL:url];
self.mapView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
self.mapView.delegate = self;
self.mapView.zoomEnabled = NO;
self.mapView.scrollEnabled = NO;
self.mapView.rotateEnabled = NO;
self.mapView.userInteractionEnabled = YES;
[self.mapView setDebugActive:NO];
[self startBenchmarkIteration];
[self.view addSubview:self.mapView];
}
using Clock = std::chrono::steady_clock;
using TimePoint = Clock::time_point;
template <typename Duration>
inline int64_t Microseconds(Duration d) {
return std::chrono::duration_cast<std::chrono::microseconds>(d).count();
}
size_t idx = 0;
enum class State { None, WaitingForAssets, WarmingUp, Benchmarking } state = State::None;
int frames = 0;
TimePoint started;
std::vector<std::pair<std::string, double>> result;
static const int warmupDuration = 20; // frames
static const int benchmarkDuration = 200; // frames
- (void)startBenchmarkIteration
{
if (mbgl::bench::locations.size() > idx) {
const auto& location = mbgl::bench::locations[idx];
[self.mapView setCenterCoordinate:CLLocationCoordinate2DMake(location.latitude, location.longitude) zoomLevel:location.zoom animated:NO];
self.mapView.direction = location.bearing;
state = State::WaitingForAssets;
NSLog(@"Benchmarking \"%s\"", location.name.c_str());
NSLog(@"- Loading assets...");
} else {
// Do nothing. The benchmark is completed.
NSLog(@"Benchmark completed.");
NSLog(@"Result:");
size_t colWidth = 0;
for (const auto& row : result) {
colWidth = std::max(row.first.size(), colWidth);
}
for (const auto& row : result) {
NSLog(@"| %-*s | %4.1f fps |", int(colWidth), row.first.c_str(), row.second);
}
exit(0);
}
}
- (void)mapViewDidFinishRenderingMap:(MGLMapView *)mapView fullyRendered:(BOOL)fullyRendered
{
(void)mapView;
(void)fullyRendered;
if (state == State::Benchmarking)
{
frames++;
if (frames >= benchmarkDuration)
{
state = State::None;
// Report FPS
const auto duration = Microseconds(Clock::now() - started);
const auto fps = double(frames * 1e6) / duration;
result.emplace_back(mbgl::bench::locations[idx].name, fps);
NSLog(@"- FPS: %.1f", fps);
// Start benchmarking the next location.
idx++;
[self startBenchmarkIteration];
} else {
[mapView invalidate];
}
return;
}
else if (state == State::WarmingUp)
{
frames++;
if (frames >= warmupDuration)
{
frames = 0;
state = State::Benchmarking;
started = Clock::now();
NSLog(@"- Benchmarking for %d frames...", benchmarkDuration);
}
[mapView invalidate];
return;
}
else if (state == State::WaitingForAssets)
{
if ([mapView isFullyLoaded])
{
// Start the benchmarking timer.
state = State::WarmingUp;
[self.mapView emptyMemoryCache];
NSLog(@"- Warming up for %d frames...", warmupDuration);
[mapView invalidate];
}
return;
}
}
- (NSUInteger)supportedInterfaceOrientations
{
return UIInterfaceOrientationMaskLandscape;
}
@end
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